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<h1 id="sec_name">
<span data-if="hdevelop" style="display:inline;">disp_channel</span><span data-if="c" style="display:none;">T_disp_channel</span><span data-if="cpp" style="display:none;">DispChannel</span><span data-if="dotnet" style="display:none;">DispChannel</span><span data-if="python" style="display:none;">disp_channel</span> (算子名称)</h1>
<h2>名称</h2>
<p><code><span data-if="hdevelop" style="display:inline;">disp_channel</span><span data-if="c" style="display:none;">T_disp_channel</span><span data-if="cpp" style="display:none;">DispChannel</span><span data-if="dotnet" style="display:none;">DispChannel</span><span data-if="python" style="display:none;">disp_channel</span></code> — Displays images with several channels.</p>
<h2 id="sec_synopsis">参数签名</h2>
<div data-if="hdevelop" style="display:inline;">
<p>
<code><b>disp_channel</b>(<a href="#MultichannelImage"><i>MultichannelImage</i></a> :  : <a href="#WindowHandle"><i>WindowHandle</i></a>, <a href="#Channel"><i>Channel</i></a> : )</code></p>
</div>
<div data-if="c" style="display:none;">
<p>
<code>Herror <b>T_disp_channel</b>(const Hobject <a href="#MultichannelImage"><i>MultichannelImage</i></a>, const Htuple <a href="#WindowHandle"><i>WindowHandle</i></a>, const Htuple <a href="#Channel"><i>Channel</i></a>)</code></p>
</div>
<div data-if="cpp" style="display:none;">
<p>
<code>void <b>DispChannel</b>(const HObject&amp; <a href="#MultichannelImage"><i>MultichannelImage</i></a>, const HTuple&amp; <a href="#WindowHandle"><i>WindowHandle</i></a>, const HTuple&amp; <a href="#Channel"><i>Channel</i></a>)</code></p>
<p>
<code>void <a href="HImage.html">HImage</a>::<b>DispChannel</b>(const HWindow&amp; <a href="#WindowHandle"><i>WindowHandle</i></a>, const HTuple&amp; <a href="#Channel"><i>Channel</i></a>) const</code></p>
<p>
<code>void <a href="HImage.html">HImage</a>::<b>DispChannel</b>(const HWindow&amp; <a href="#WindowHandle"><i>WindowHandle</i></a>, Hlong <a href="#Channel"><i>Channel</i></a>) const</code></p>
<p>
<code>void <a href="HWindow.html">HWindow</a>::<b>DispChannel</b>(const HImage&amp; <a href="#MultichannelImage"><i>MultichannelImage</i></a>, const HTuple&amp; <a href="#Channel"><i>Channel</i></a>) const</code></p>
<p>
<code>void <a href="HWindow.html">HWindow</a>::<b>DispChannel</b>(const HImage&amp; <a href="#MultichannelImage"><i>MultichannelImage</i></a>, Hlong <a href="#Channel"><i>Channel</i></a>) const</code></p>
</div>
<div data-if="com" style="display:none;"></div>
<div data-if="dotnet" style="display:none;">
<p>
<code>static void <a href="HOperatorSet.html">HOperatorSet</a>.<b>DispChannel</b>(<a href="HObject.html">HObject</a> <a href="#MultichannelImage"><i>multichannelImage</i></a>, <a href="HTuple.html">HTuple</a> <a href="#WindowHandle"><i>windowHandle</i></a>, <a href="HTuple.html">HTuple</a> <a href="#Channel"><i>channel</i></a>)</code></p>
<p>
<code>void <a href="HImage.html">HImage</a>.<b>DispChannel</b>(<a href="HWindow.html">HWindow</a> <a href="#WindowHandle"><i>windowHandle</i></a>, <a href="HTuple.html">HTuple</a> <a href="#Channel"><i>channel</i></a>)</code></p>
<p>
<code>void <a href="HImage.html">HImage</a>.<b>DispChannel</b>(<a href="HWindow.html">HWindow</a> <a href="#WindowHandle"><i>windowHandle</i></a>, int <a href="#Channel"><i>channel</i></a>)</code></p>
<p>
<code>void <a href="HWindow.html">HWindow</a>.<b>DispChannel</b>(<a href="HImage.html">HImage</a> <a href="#MultichannelImage"><i>multichannelImage</i></a>, <a href="HTuple.html">HTuple</a> <a href="#Channel"><i>channel</i></a>)</code></p>
<p>
<code>void <a href="HWindow.html">HWindow</a>.<b>DispChannel</b>(<a href="HImage.html">HImage</a> <a href="#MultichannelImage"><i>multichannelImage</i></a>, int <a href="#Channel"><i>channel</i></a>)</code></p>
</div>
<div data-if="python" style="display:none;">
<p>
<code>def <b>disp_channel</b>(<a href="#MultichannelImage"><i>multichannel_image</i></a>: HObject, <a href="#WindowHandle"><i>window_handle</i></a>: HHandle, <a href="#Channel"><i>channel</i></a>: MaybeSequence[int]) -&gt; None</code></p>
</div>
<h2 id="sec_description">描述</h2>
<p><code><span data-if="hdevelop" style="display:inline">disp_channel</span><span data-if="c" style="display:none">disp_channel</span><span data-if="cpp" style="display:none">DispChannel</span><span data-if="com" style="display:none">DispChannel</span><span data-if="dotnet" style="display:none">DispChannel</span><span data-if="python" style="display:none">disp_channel</span></code> displays an image in the output window.
It is possible to display several images with one call. In this case the
images are displayed one after another. If the definition domains of the
images overlap only the last image is visible. The parameter
<a href="#Channel"><i><code><span data-if="hdevelop" style="display:inline">Channel</span><span data-if="c" style="display:none">Channel</span><span data-if="cpp" style="display:none">Channel</span><span data-if="com" style="display:none">Channel</span><span data-if="dotnet" style="display:none">channel</span><span data-if="python" style="display:none">channel</span></code></i></a> defines the number of the channel that is displayed.
For RGB-images the three color channels have to be used within a tuple
parameter. For more information see <a href="disp_image.html"><code><span data-if="hdevelop" style="display:inline">disp_image</span><span data-if="c" style="display:none">disp_image</span><span data-if="cpp" style="display:none">DispImage</span><span data-if="com" style="display:none">DispImage</span><span data-if="dotnet" style="display:none">DispImage</span><span data-if="python" style="display:none">disp_image</span></code></a>.</p>
<h2 id="sec_execution">运行信息</h2>
<ul>
  <li>多线程类型:可重入(与非独占操作符并行运行)。</li>
<li>多线程作用域:全局(可以从任何线程调用)。</li>
  <li>未经并行化处理。</li>
</ul>
<h2 id="sec_parameters">参数表</h2>
  <div class="par">
<div class="parhead">
<span id="MultichannelImage" class="parname"><b><code><span data-if="hdevelop" style="display:inline">MultichannelImage</span><span data-if="c" style="display:none">MultichannelImage</span><span data-if="cpp" style="display:none">MultichannelImage</span><span data-if="com" style="display:none">MultichannelImage</span><span data-if="dotnet" style="display:none">multichannelImage</span><span data-if="python" style="display:none">multichannel_image</span></code></b> (input_object)  </span><span>(multichannel-)image(-array) <code>→</code> <span data-if="hdevelop" style="display:inline">object</span><span data-if="dotnet" style="display:none"><a href="HImage.html">HImage</a></span><span data-if="python" style="display:none">HObject</span><span data-if="cpp" style="display:none"><a href="HImage.html">HImage</a></span><span data-if="c" style="display:none">Hobject</span> (byte / direction / cyclic / int1 / int2 / uint2 / int4 / int8 / real / complex / vector_field)</span>
</div>
<p class="pardesc">Multichannel images to be displayed.</p>
</div>
  <div class="par">
<div class="parhead">
<span id="WindowHandle" class="parname"><b><code><span data-if="hdevelop" style="display:inline">WindowHandle</span><span data-if="c" style="display:none">WindowHandle</span><span data-if="cpp" style="display:none">WindowHandle</span><span data-if="com" style="display:none">WindowHandle</span><span data-if="dotnet" style="display:none">windowHandle</span><span data-if="python" style="display:none">window_handle</span></code></b> (input_control)  </span><span>window <code>→</code> <span data-if="dotnet" style="display:none"><a href="HWindow.html">HWindow</a>, </span><span data-if="dotnet" style="display:none"><a href="HTuple.html">HTuple</a></span><span data-if="python" style="display:none">HHandle</span><span data-if="cpp" style="display:none"><a href="HTuple.html">HTuple</a></span><span data-if="c" style="display:none">Htuple</span><span data-if="hdevelop" style="display:inline"> (handle)</span><span data-if="dotnet" style="display:none"> (<i>IntPtr</i>)</span><span data-if="cpp" style="display:none"> (<i>HHandle</i>)</span><span data-if="c" style="display:none"> (<i>handle</i>)</span></span>
</div>
<p class="pardesc">Window handle.</p>
</div>
  <div class="par">
<div class="parhead">
<span id="Channel" class="parname"><b><code><span data-if="hdevelop" style="display:inline">Channel</span><span data-if="c" style="display:none">Channel</span><span data-if="cpp" style="display:none">Channel</span><span data-if="com" style="display:none">Channel</span><span data-if="dotnet" style="display:none">channel</span><span data-if="python" style="display:none">channel</span></code></b> (input_control)  </span><span>integer(-array) <code>→</code> <span data-if="dotnet" style="display:none"><a href="HTuple.html">HTuple</a></span><span data-if="python" style="display:none">MaybeSequence[int]</span><span data-if="cpp" style="display:none"><a href="HTuple.html">HTuple</a></span><span data-if="c" style="display:none">Htuple</span><span data-if="hdevelop" style="display:inline"> (integer)</span><span data-if="dotnet" style="display:none"> (<i>int</i> / </span><span data-if="dotnet" style="display:none">long)</span><span data-if="cpp" style="display:none"> (<i>Hlong</i>)</span><span data-if="c" style="display:none"> (<i>Hlong</i>)</span></span>
</div>
<p class="pardesc">Number of channel or the numbers of the RGB-channels</p>
<p class="pardesc"><span class="parcat">Default:
      </span>1</p>
<p class="pardesc"><span class="parcat">Suggested values:
      </span>1, 2, 3, 4, 5, 6, 7, 8, 9, 10</p>
</div>
<h2 id="sec_example_all">例程 (HDevelop)</h2>
<pre class="example">
read_image(Image,'patras')
count_channels (Image, Channels)
for I := 1 to Channels by 1
    disp_channel (Image, WindowHandle, I)
endfor
</pre>
<h2 id="sec_result">结果</h2>
<p>If the used images contain valid values and a correct
output mode is set, <code><span data-if="hdevelop" style="display:inline">disp_channel</span><span data-if="c" style="display:none">disp_channel</span><span data-if="cpp" style="display:none">DispChannel</span><span data-if="com" style="display:none">DispChannel</span><span data-if="dotnet" style="display:none">DispChannel</span><span data-if="python" style="display:none">disp_channel</span></code> returns <TT>2</TT> (
      <TT>H_MSG_TRUE</TT>)
    . Otherwise an
exception is raised.</p>
<h2 id="sec_predecessors">可能的前置算子</h2>
<p>
<code><a href="open_window.html"><span data-if="hdevelop" style="display:inline">open_window</span><span data-if="c" style="display:none">open_window</span><span data-if="cpp" style="display:none">OpenWindow</span><span data-if="com" style="display:none">OpenWindow</span><span data-if="dotnet" style="display:none">OpenWindow</span><span data-if="python" style="display:none">open_window</span></a></code>, 
<code><a href="set_rgb.html"><span data-if="hdevelop" style="display:inline">set_rgb</span><span data-if="c" style="display:none">set_rgb</span><span data-if="cpp" style="display:none">SetRgb</span><span data-if="com" style="display:none">SetRgb</span><span data-if="dotnet" style="display:none">SetRgb</span><span data-if="python" style="display:none">set_rgb</span></a></code>, 
<code><a href="set_lut.html"><span data-if="hdevelop" style="display:inline">set_lut</span><span data-if="c" style="display:none">set_lut</span><span data-if="cpp" style="display:none">SetLut</span><span data-if="com" style="display:none">SetLut</span><span data-if="dotnet" style="display:none">SetLut</span><span data-if="python" style="display:none">set_lut</span></a></code>, 
<code><a href="set_hsi.html"><span data-if="hdevelop" style="display:inline">set_hsi</span><span data-if="c" style="display:none">set_hsi</span><span data-if="cpp" style="display:none">SetHsi</span><span data-if="com" style="display:none">SetHsi</span><span data-if="dotnet" style="display:none">SetHsi</span><span data-if="python" style="display:none">set_hsi</span></a></code>
</p>
<h2 id="sec_alternatives">可替代算子</h2>
<p>
<code><a href="disp_image.html"><span data-if="hdevelop" style="display:inline">disp_image</span><span data-if="c" style="display:none">disp_image</span><span data-if="cpp" style="display:none">DispImage</span><span data-if="com" style="display:none">DispImage</span><span data-if="dotnet" style="display:none">DispImage</span><span data-if="python" style="display:none">disp_image</span></a></code>, 
<code><a href="disp_color.html"><span data-if="hdevelop" style="display:inline">disp_color</span><span data-if="c" style="display:none">disp_color</span><span data-if="cpp" style="display:none">DispColor</span><span data-if="com" style="display:none">DispColor</span><span data-if="dotnet" style="display:none">DispColor</span><span data-if="python" style="display:none">disp_color</span></a></code>
</p>
<h2 id="sec_see">参考其它</h2>
<p>
<code><a href="open_window.html"><span data-if="hdevelop" style="display:inline">open_window</span><span data-if="c" style="display:none">open_window</span><span data-if="cpp" style="display:none">OpenWindow</span><span data-if="com" style="display:none">OpenWindow</span><span data-if="dotnet" style="display:none">OpenWindow</span><span data-if="python" style="display:none">open_window</span></a></code>, 
<code><a href="reset_obj_db.html"><span data-if="hdevelop" style="display:inline">reset_obj_db</span><span data-if="c" style="display:none">reset_obj_db</span><span data-if="cpp" style="display:none">ResetObjDb</span><span data-if="com" style="display:none">ResetObjDb</span><span data-if="dotnet" style="display:none">ResetObjDb</span><span data-if="python" style="display:none">reset_obj_db</span></a></code>, 
<code><a href="set_lut.html"><span data-if="hdevelop" style="display:inline">set_lut</span><span data-if="c" style="display:none">set_lut</span><span data-if="cpp" style="display:none">SetLut</span><span data-if="com" style="display:none">SetLut</span><span data-if="dotnet" style="display:none">SetLut</span><span data-if="python" style="display:none">set_lut</span></a></code>, 
<code><a href="dump_window.html"><span data-if="hdevelop" style="display:inline">dump_window</span><span data-if="c" style="display:none">dump_window</span><span data-if="cpp" style="display:none">DumpWindow</span><span data-if="com" style="display:none">DumpWindow</span><span data-if="dotnet" style="display:none">DumpWindow</span><span data-if="python" style="display:none">dump_window</span></a></code>
</p>
<h2 id="sec_module">模块</h2>
<p>
Foundation</p>
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